Записки программиста, обо всем и ни о чем. Но, наверное, больше профессионального.

2012-04-28

Can you use Google Maps imagery in an ArcGIS Silverlight Viewer?

Казалось бы, что мешает использовать гуглокарты во вьювере карт от ведущего производителя ПО для ГИС? В смысле, раз уж есть такой красивый ArcGIS Silverlight Viewer и он умеет показывать тайловые карты, причем тайловая схема нагло содрана приведена к гуглевой, то почему бы ему не показывать гуглокарты?

Нельзя патамушта. Нелегально это.

Now for the legal answer. In short, no. You cannot access Google Maps imagery outside of an interface (read: APIs) provided by Google. This is mentioned in an online FAQ which references an item in the terms of service. The last statement in the terms of service appears to suggest that direct access to map tiles outside of an API is possible via an explicit agreement. In an email conversation with Thor Mitchell, Product Manager for the Google Maps API, he clarified these terms by stating that such agreements are rare and "they are generally limited to embedded device partnerships such as in-car navigation systems and in-flight entertainment systems." Thor also reminded me that the URL format to access Google tiles is an undocumented interface, so it can change at any time. And Google maintains a team that identifies and contacts application developers that use Google tiles (and services) in an unsupported way. If you try, you will likely be asked to stop, followed by more punitive measures if ignored.


Так что же, никак? Да нет, если очень хочется, то можно.

You'll need to use the Google Static Maps API. Essentially it generates snapshots of Google map tiles at an extent, image size, and scale level that matches the Google Maps tiling scheme.


В общем, полезная статья. Там и пример кода есть, реализующий Layer class для вьювера. В общем, хоть и корявым образом, но использовать гуглокарты в ArcGIS Silverlight Viewer можно.

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